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  4. Smart Locks & IoT Equipment Transforming Rental Living——How to Use Latest Features & Key Precautions
Daily Life

Smart Locks & IoT Equipment Transforming Rental Living——How to Use Latest Features & Key Precautions

2026-04-10

As smart locks and IoT appliances spread throughout the rental market, real estate professionals explain how the latest convenient equipment works, its benefits and drawbacks, and important precautions when adopting it.

Smart Locks & IoT Equipment Transforming Rental Living——How to Use Latest Features & Key Precautions
森

Reviewed by: Nobuyuki MoriPresident, M-Assets Co., Ltd. / Licensed Real Estate Transaction Specialist (Miyagi #018212)

Table of contents

  1. 01What Are Smart Locks?——Their Current Adoption in the Rental Market
  2. 02Benefits of Smart Locks
  3. 03Drawbacks and Precautions for Smart Locks
  4. 04Types of IoT Equipment Growing in Rental Properties
  5. 05Checklist When Choosing Properties with Latest Equipment

In recent years, rental property equipment has evolved rapidly. Technology-enabled features—smart locks (electronic locks), comprehensive internet connectivity, smart home-compatible units—are becoming standard equipment. Many people likely wonder: "It sounds convenient, but is it actually easy to use?" or "What happens if it breaks?" In this article, as a real estate professional, I'll explain in detail how the latest equipment works, its benefits and drawbacks, and important precautions when adopting it.

What Are Smart Locks?——Their Current Adoption in the Rental Market

A smart lock is an electronic lock that can be locked and unlocked using a smartphone, passcode, card key, or similar methods. It replaces traditional physical keys (pin tumbler locks), and in rental properties it's deployed in two main patterns:

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①When the property owner (management company or landlord) installs it as standard equipment In new buildings or renovated properties, the management company installs a smart lock as standard equipment. Residents unlock and lock using a smartphone app or passcode.

②When a resident installs it themselves Residents install an aftermarket smart lock that attaches to the existing lock. In this case, from the perspective of restoration to original condition, it must be removed upon move-out. Installation requires prior approval from the management company or landlord.

Benefits of Smart Locks

No need to carry keys, reduced risk of loss Since you can unlock with your smartphone, the risk of losing physical keys drops significantly. In rental situations, losing a key often means spending several thousand yen on cylinder replacement, making this a major benefit.

Remote operation and auto-lock features Some products can be locked or unlocked remotely via a smartphone app, eliminating the worry of "Did I lock the door?" Many popular products also include auto-lock functionality that engages when the door closes.

Easy spare key management You can grant and revoke temporary access to family, housekeepers, or service workers through an app. No need to make physical spare keys, and access control is simple.

Access history tracking Some products let you check unlock/lock history in an app, providing security peace of mind.

Drawbacks and Precautions for Smart Locks

Risk of phone battery drain or device failure If your smartphone battery dies, you may not be able to unlock. While most products allow backup physical keys, be careful if you develop a habit of not carrying one.

Communication failure and product discontinuation risks Products that rely on cloud services may stop working if there's a network outage or the service shuts down. Before signing up, confirm the provider's contingency plan if the service is discontinued.

Battery depletion precautions Many smart locks run on batteries, and a dead battery could leave you unable to unlock. Regular battery checks are important. Most products notify you via app when battery is low.

Security risks Hacking or spoofing attacks that lead to unauthorized unlocking are possible. Choose products from trustworthy manufacturers and keep firmware updated.

Types of IoT Equipment Growing in Rental Properties

Beyond smart locks, other IoT equipment is increasingly common in rental properties:

Smart video intercom This links a camera-equipped intercom to your smartphone, letting you communicate with visitors and unlock remotely even when away. It streamlines package delivery and helps screen suspicious visitors.

Comprehensive internet (Wi-Fi included) properties The management company contracts a single internet service and residents get free or fixed-rate Wi-Fi access. This saves the hassle of arranging your own connection, though speeds and reliability vary by property.

Parcel delivery boxes IoT-enabled parcel boxes notify you via smartphone when a package arrives. This solves the problem of receiving packages while away, and is becoming standard in new apartment buildings.

Smart water heaters and air conditioning These allow you to reserve hot water or control AC remotely via smartphone. Prepare before you arrive home for convenience and energy savings.

Checklist When Choosing Properties with Latest Equipment

When selecting a property with latest equipment, verify these points:

  • •For smart locks: Which manufacturer and model? Can it be used alongside a physical key?
  • •For internet: What are the connection speed, provider, and device limits?
  • •Who handles repairs or malfunctions—the management company or equipment manufacturer?
  • •Can residents add their own smart lock later?

As of 2026, smart home equipment adoption in the rental market continues to accelerate, with new and renovated properties increasingly offering it as standard. Enjoying the convenience while understanding the drawbacks and risks—making a wise choice—leads to a comfortable rental life.

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